Chevrolet 2007 Silverado 1500 Pickup, Owner'S Manual

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Ignition Positions
With the key in the ignition switch, you can turn it
to four different positions.
Notice: Using a tool to force the key from the
ignition switch could cause damage or break
the key. Use the correct key and turn the key
only with your hand. Make sure the key is all the
way in. If it is, turn the steering wheel left and
right while you turn the key hard. If none of this
works, then your vehicle needs service.
A (LOCK): This position locks your ignition when
the key is removed. The steering locks when
equipped with a manual transmission. It is
a theft-deterrent feature. You will only be able to
remove your key when the ignition is turned
to LOCK.
B (ACCESSORY): This position allows you to use
things like the radio, power windows and the
windshield wipers when the engine is off.
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CAUTION:
On manual transmission vehicles, turning
the key to LOCK will lock the steering
column and result in a loss of ability to
steer the vehicle. This could cause a
collision. If you need to turn the engine
off while the vehicle is moving, turn the
key only to ACCESSORY. Do not press
the key release button while the vehicle is
moving.
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